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结合天定高速沥青路面工程,量测了施工中热拌沥青混合料和温拌沥青混合料内部及表面的温度,探讨了两种沥青混合料施工中不同时刻的温度变化差异,并根据灰色理论建立了热拌和温拌沥青混合料施工中温度变化的GM(1,1)模型。结果表明:热拌沥青混合料与温拌沥青混合料表面温度变化差异不大;初压过后的温拌沥青混合料内部温度明显大于热拌沥青混合料各个时刻的内部温度;建立的施工中热拌与温拌混合料内部及表面温度变化预测模型精度较高,可以预测温拌沥青混合料的温度变化,对温拌沥青混合料有效施工时间的确定具有重要的参考作用。
Combined with Tianding high-speed asphalt pavement project, the temperature inside and outside of the hot mix asphalt mixture and the warm mix asphalt mixture during construction were measured, and the differences of temperature changes between the two asphalt mixtures at different time were discussed. According to the gray theory The GM (1,1) model of temperature variation during hot mix and warm mix asphalt mixture construction was established. The results show that there is no significant difference in the surface temperature between the hot mix asphalt and the warm mix asphalt mixture. The internal temperature of the warm mix asphalt mixture after the initial pressure is obviously larger than the internal temperature of the hot mix asphalt mixture at various times. The prediction accuracy of temperature variation inside and mixed with warm mix is high, which can predict the temperature change of warm mix asphalt, which is of important reference to determine the effective construction time of warm mix asphalt.